drivers/of/empty_root.dts

// SPDX-License-Identifier: GPL-2.0-only
/dts-v1/;

/ {
	/*
	 * #address-cells/#size-cells are required properties at root node.
	 * Use 2 cells for both address cells and size cells in order to fully
	 * support 64-bit addresses and sizes on systems using this empty root
	 * node.
	 */
	#address-cells = <0x02>;
	#size-cells = <0x02>;
};